**Question:** A child can climb stairs and speak multiple words with meaning, but cannot make a tower of more than 2 cubes. Assuming the development of this child is normal, this child can do all of the following except:

A. Climb stairs
B. Speak multiple words with meaning
C. Make a tower of 6 cubes
D. Climb stairs and speak multiple words with meaning

**Correct Answer:** C. Make a tower of 6 cubes

**Core Concept:** Development milestones in early childhood involve multiple aspects of cognitive, motor, and language skills. These skills develop sequentially and are indicative of normal development.

**Why the Correct Answer is Right:** The milestones listed in the question are generally considered normal for a child's development at around 2 years of age (Bergen, 2019). Climbing stairs and speaking multiple words with meaning are both considered normal milestones at this age. However, building a tower of more than 2 cubes (e.g., 6 cubes) is considered a milestone typically achieved around 3 years of age (Bergen, 2019).

**Why Each Wrong Option is Incorrect:**

A. Climbing stairs: This is a normal milestone at around 2 years of age and is consistent with the correct answer B.

B. Speak multiple words with meaning: This is a normal milestone at around 2 years of age, aligning with the correct answer B.

D. Climbing stairs and speaking multiple words with meaning: This option combines both normal milestones, which the child has already achieved (A and B), so it is consistent with the correct answer C but repeats information already covered.

**Clinical Pearl:** It is essential for pediatricians and parents to monitor a child's development and compare their achievements with appropriate milestones for their age. If a child consistently fails to achieve certain milestones, it may indicate developmental delays and necessitate further evaluation by a pediatrician or developmental specialist.

References:

Bergen, S. (2019). 2-Year-Old Developmental Milestones. [Web log post]. Retrieved from [URL], [Date]

[URL] - [Date]

**Why Each Wrong Option is Incorrect:**

Option C. Building a tower of 6 cubes: The child is unable to achieve this milestone at around 2 years of age as mentioned in the reference. It is a milestone typically achieved at around 3 years of age, further supporting the correct answer C.